The flange material at both ends of the rubber joint is generally divided into three types: carbon steel flange, forged flange and stainless steel flange. With its special advantages, stainless steel flanges can be used directly without any treatment, and they are more widely used in anticorrosive pipelines and have a long service life. Carbon steel flanges and forged flanges are susceptible to rust due to their iron characteristics, and their service life will be reduced during use. Then we will take corresponding measures to prevent rust. Generally, we will use hot-dip galvanizing and plastic spraying to deal with flange rust.
The galvanized flange rubber joint adopts hot-dip galvanized flange, and the flange material is cast steel, which is what we call forged flange. The manufacturing process of this flange makes the surface of the flange without air holes, and the surface of the flange is flat and suitable. The surface is hot-dip galvanized, that is, hot-dip galvanized, to achieve anti-corrosion effect. The hot-dip galvanized flange rubber joint has a long service life and reliable quality. Carbon steel flange rubber joints are composed of cast steel flanges and rubber spheres. If carbon steel flanges are galvanized for rust prevention, the shortcomings of carbon steel flanges will be exposed. Because carbon steel flanges are manufactured using the casting process There are pores, so the appearance of carbon steel galvanized flanges has pores. Although treated, it affects the appearance. In general, cast steel flanges are mostly spray-coated for anti-corrosion treatment. In this way, the pores generated by the casting process are covered by plastic powder, which will make up for the shortcomings of carbon steel flanges, and almost no pores can be seen from the appearance. In this way, the appearance of the cast steel spray flange rubber joint is better. After the flange air hole treatment of the cast steel galvanized flange rubber joint , you will see a light orange substance, which is generally stored in the hole. Although it affects the appearance, it does not affect the use.
As we all know, after the rubber joint , single ball rubber joint or double ball rubber joint is used for a long time, the flanges at both ends will rust.
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